Basic Maths

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Across
  1. 1. subtraction of 10 and 4
  2. 2. addition of 6 and 9
Down
  1. 1. addition of 5 and 2
  2. 2. multiplication of 2 and 2
  3. 3. multiplication of 5 and 2
  4. 4. subtraction of 9 and 1